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Home >> Mazda >> 2003 >> MPV ES >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0401: EGR Flow Insufficient Detected >> Detection Condition
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Detection Condition

DTC is set, when the difference in manifold pressure is too small between when EGR is open and closed. This is an intermittent monitor. MIL is illuminated if PCM detects malfunction in 2 consecutive drive cycles.